The source project of this merge request has been removed.
Fix compiler warning zero as null pointer constant
This uses nullptr instead of Z_NULL because the later one is defined
with 0 integer value. Otherwise, the following warning is shown with
gcc toolchain
karchive/src/kgzipfilter.cpp:74:26: warning: zero as null pointer constant [-Wzero-as-null-pointer-constant]
74 | d->zStream.next_in = Z_NULL;
| ^~~~~~